from sys import stdin

input = stdin.readline


def solve():
    X = int(input())
    check = (X - 400)//200
    print(8 - check)


if __name__ == '__main__':
    solve() from sys import stdin input = stdin.readline input stdin.readline stdin readline def solve():
    X = int(input())
    check = (X - 400)//200
    print(8 - check) solve X = int(input()) X int(input()) int input() input check = (X - 400)//200 check (X - 400)//200 X - 400 X 400 200 print(8 - check) print 8 - check 8 check if __name__ == '__main__':
    solve() __name__ == '__main__' __name__ '__main__' solve() solve def solve():
    X = int(input())
    check = (X - 400)//200
    print(8 - check) def solve():
    X = int(input())
    check = (X - 400)//200
    print(8 - check) solve input = stdin.readline stdin.readline input
from sys import stdin

input = stdin.readline


def solve():
    X = int(input())
    check = (X - 400)//200
    print(8 - check)


if __name__ == '__main__':
    solve()
